Door-lock.



J. SGHIGKE.

DOOR LOOK.

APPLIOATION FILED NARA, 1912.

1,031,293. Patented July 2, 1912.

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;W/ E F I E m 7 7 h IQlE WITNESSES: IN VENTOR.

55- ubsepk Schick:-

El {1 ATTOI-ZNEY.

COLUMBIA PLANOGRAPN C0. WASHINGTON. D; (II.

JOSEPH SCHICKE, OF ST. LOUIS, MISSOURI.

DOOR-LOCK.

Specification of Letters Patent.

Patented July 2, 1912.

Application filed March 4, 1912. Serial No. 681,331.

To all whom it may concern:

Be it known that I, J OSEPH Sonronn, citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Door- Locks, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming a part hereof.

My invention has relation to improvements in looks; and it consists inthe novel details of construction more fully set forth in thespecification and pointed out in the claim.

In the drawings, Figure l is a front view of my lock set in a door, thelatter being broken away; Fig. 2 is a side elevation, with door shownpart-1y in section; Fig. 3 is a rear end view of the lock; Fig. 4 is across-section on the line 4L-l= of Fig. 2 taken through the bolt-lockcasing; Fig. 5 is a face view of the inside mechanism of the bolt-lock,one-half of the casing being removed; Fig. 6 is an inside View of thehalf casing removed from Fig. 5; Fig. 7 is aview similar to Fig. 5, withthe bolt thrown to locking position; Fig. 8 is a face view of thetumbler which looks the keyhub or cylinder; Fig. 9 is a cross-section onthe line 9-9 of Fig. 2; Fig. 10 is a plan of the key-hub; and Figs. 11,12 and 13 are modifications showing different forms of casings.

The present improvement is more particularly directed to mortise locksof the tumbler variety, and has for its objects to provide anindependent tubular housing or casing for the bolt-lock and door-knoblatch respectively, thereby reducing the quantity of material necessaryto be removed from the door to provide the mortise for the reception ofthe lock; to provide the boltlock with a rotatable key-receiving hubnormally held against rotation by a specially improvised tumbler whichcan be displaced or released from the hub only by a properly fittingkey; to provide a lock whose casing is susceptible of a variety ofmodifications; one which will not necessitate weakening the door fromexcessive mortising; and one possessing further and other advantagesbetter. apparent from a detailed description of the invention, which isas follows Referring to the drawings, and for the present to Figs. 1 to10 inclusive, C represents a tubular casing or housing for thebolt-lock, and O a similar housing or casing for the knob-operated latchL, the knob K being carried at either end of the rotatable shankor bar Bpassed through the easmg and through the door D as fully understood inthe art, these features (except the casings C, C) forming no part of myinvention. Preferably, the casings C, C, are each composed of twosections or halves separable along a longitudinal central plane andsecured together by screws with the operating parts within the casings.The outer ends of the casings are connected by a plate P, the wholebeing set in the door as well understood in the art and secured in postion by a screw a as shown. With a casing as here described, where theindividual casings C, C, are spaced apart, only sufficient mortising ofthe door to receive the casings and their-plate P is necessary, theportion of the door between the casings, into which the screw a isdriven remaining intact, so that the door is in no wise weakened in theregion of the lock. The plate P is of course, provided with openings forthe free passage therethrough of the latch L and the bolt 1.

- The bolt 1 is provided with an elongated slot cl which is traversed bythe stud or boss 2 which receives the screw 3 by which the two halves ofthe casing C- are partially held together (provision being made at theinner ends of easing sections for another screw passed through at 3).Pivoted about the stud 2 is a spring controlled tumbler 4 provided withnotches 'n, n, to engage a pin or peg 5 on the bolt and hold the latterin an unlocked or locked position according to which notch (n, n)happens to be in engagement with said pin. A conventional spring 6 holdsthe tumbler depressed against its pin as understood in the art. Thetumbler is raised or disengaged from its pin for purposes of throwingthe bolt, by means of a process or tooth t formed about the periphery ofa rotatable key-hub 7 the latter being likewise provided with a secondand longer process t to operate between the walls of the recess 1'formed in the rear extension 1 of the bolt.

No novelty is here claimed for the manner of actuating either thetumbler 4 or the bolt 1 through the instrumcntality of the rotatablehubor cylinder 7 by which the key S .is received, the invention beingdirected to' the mechanism by which the hub is held against rotation andhow released when a proper key is inserted thereinto. This mechanism isas follows :It will be seen that the hub 7 is provided with alongitudinal (or axial) passage h for the free passage therethrough ofthe stem of the key S, the key being preferably of the flat variety andthe passage h oblong in cross-section. The periphery of the hub at theend farthest from the teeth 2 t, is grooved at points diametricallyopposite one another, the grooves or recesses m, m, being parallel tothe teeth 2?, t, and to one another, and transverse to the hub axis, andof a depth to communicate with or cut across the axial or key passageway72 (Figs. 8, 9, l0). Across either groove m (depending on which one ispresented thereto) .is adapted to bear the free terminal of aspring-controlled tumbler 8, likewise pivoted to the stud 2 but on theside of the bolt 1 opposite from the tumbler 4L,

and provided with the usual controlling spring 9. The tumbler 8 isprovided with a tooth 10 which, as the tumbler lies across the base ofthe recess m, enters the passage h to a depth beyond the base of thegroove m and approximating about one-third the height of said passage(the height being the larger dimension of the oblong defining thecross-section of the passage). The projection of the tooth 10 into thepassage 72. to a depth beyond the base of the groove or recess m locksthe hub 7 against rotation (Fig. 8) and before the latter may be turnedto throw the bolt, the tooth 10 of the tumbler 8 must be dislodged, orraised sufliciently to clear the walls of the passage-way h. Thisdislodgment is accomplished by the bevel or wedge shaped end 0 of thekey S. As the bevel end of the key engages the free edge of the tooththe latter is lifted and hence the tumbler 8 is lifted to cause thetooth 10 to clear the hub 7 when the latter will be free to turn tothrow the bolt. By providing two recesses m, m, at points diametricallyopposite one another the tooth 10 may settle in either one depending onwhether the lock bolt 1 is thrown to looking or unlocked position. Wethus have a tumbler-controlled key-hub which can only be turned by thekey after the latter has released the tumbler by which the hub is lockedagainst rotation. The disengagement of the hub y from the tumbler 8 bymeans of the key which rotates the hub constitutes one of the featuresof the present invention.

The operation of the bolt 1 is obvious from the preceding. Uponinserting the key through the key-hole 0 of the casing G into thepassage ]Z- of the hub 7 and disengaging the latter from the tumbler 8as described, the hub is free to turn with the key. The turning of thehub aotuates first the tumbler 4 which releases the bolt, after whichthe bolt is thrown by the hub-process t as described.

The form of the individual casing C, C, or plate P, may of course, bevaried. In Fig. 11 I show plain circular casings E, E, connected by aplate G having a narrow middle portion terminating in enlarged portions;in Fig. 12 I show a tubular cylindrical casing E with flattened sides;in Fig. 13 I show a tubular cylindrical. casing E with peripheralcorrugations. The examples may be multiplied indefinitely. Structuraldetails not alluded to are old in the art and require no description.

Having described my invention, what I claim is I11 a mortise-lock, atubular casing open at one end, a sliding bolt therefor, a rotatablekey-hub having an axial passage-way poly onal in cross-section for theinsertion of a key passed through the wall of the casing, and providedwith processes for throwing the bolt, the hub'being provided withdiametrically disposed parallel grooves intersecting the passageway andestablishing communication therewith through the walls of the hub, aspring-controlled pivoted tumbler adapted to rest with its free endacross either groove and provided wit-h a tooth entering the passage-waybeyond the base of the groove for locking the hub against rotation, saidtumbler being adapted to be dislodged by the insertion of a key having abevel end engaging the tooth and lifting the same out of the passageway, leaving the hub free to rotate with the turning of the key, wherebythe bolt may be thrown.

In testimony whereof I affix my signature, in presence (if twowitnesses.

JOSEPH SOHIOKE.

Witnesses:

EMIL STAREK, Jos. A. MICHEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

